The language you see all client text in. Some of the text may change to the new language immediately, but you must exit the client and restart it for the complete change to take effect. To switch between complex script languages (like Japanese) and Latin based script languages (like English), you may have to reinstall the CGoban client. The "System Default" language option uses your computer's default language.

The name of the computer running the KGS server. You should leave it as "goserver.gokgs.com" unless you are using a port forwarder. If you don't know whether you are using a port forwarder or not, then you aren't, so leave it at the default value.

The amount of time remaining before the client begins warning you that your time running out. For example, if the Time Warning Level is 60 seconds then the client warns you when you have 60 seconds remaining on your clock.

Related to the two previous settings.None: Turns off all warnings
Flash: Flashes the time clock for each second that passes during the warning period.
Beep: Sends the standard PC beep for each second that passes during the warning period
Both: Turns on both the "Flash" and "Beep" warnings.

The games you select in the popup list.
No Games: Turns off sound for all games. (note other sounds remain enabled)My Games: Turns on sound only for the games the user is playing in.All Games: Turns sounds on for all games (both observed and played games)

This alarm tells you that you have a PM when you are playing, reviewing, or watching a game. In fact, this alarm announces a PM whenever the focus is not on the Main KGS Window. When the alarm goes off, it sounds like a telephone is ringing.